6826924 Zylindersatz Zundapp 80cc Polini mit Zylinderkopf

Very special racingkit for the 50cc engine
Enginecarters have to be adjusted to a cylinder outside diameter of 53,5mm

Technical data:
Piston diameter 48mm, stroke 41,6mm
Displacement 75,24cc
Performance: 13,6 Hp at 9800 rpm